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FBuildInput and the associated builder type collect the inputs for a build. #rb Zousar.Shaker #rnx [CL 16406497 by Devin Doucette in ue5-main branch]
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "DerivedDataBuildInput.h"
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#include "Compression/CompressedBuffer.h"
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#include "Containers/Map.h"
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#include "Containers/StringView.h"
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#include "Containers/UnrealString.h"
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#include "DerivedDataBuildPrivate.h"
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#include <atomic>
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namespace UE::DerivedData::Private
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{
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class FBuildInputBuilderInternal final : public IBuildInputBuilderInternal
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{
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public:
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inline explicit FBuildInputBuilderInternal(FStringView InName)
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: Name(InName)
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{
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checkf(!Name.IsEmpty(), TEXT("A build input requires a non-empty name."));
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}
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~FBuildInputBuilderInternal() final = default;
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void AddInput(FStringView Key, const FCompressedBuffer& Buffer) final
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{
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const uint32 KeyHash = GetTypeHash(Key);
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checkf(!Key.IsEmpty(), TEXT("Empty key used in input for build of '%s'."), *Name);
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checkf(!Inputs.ContainsByHash(KeyHash, Key), TEXT("Duplicate key '%.*s' used in input for "),
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TEXT("build of '%s'."), Key.Len(), Key.GetData(), *Name);
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Inputs.EmplaceByHash(KeyHash, Key, Buffer);
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}
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FBuildInput Build() final;
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FString Name;
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TMap<FString, FCompressedBuffer> Inputs;
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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class FBuildInputInternal final : public IBuildInputInternal
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{
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public:
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explicit FBuildInputInternal(FBuildInputBuilderInternal&& InputBuilder);
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~FBuildInputInternal() final = default;
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FStringView GetName() const final { return Name; }
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const FCompressedBuffer& GetInput(FStringView Key) const final;
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inline void AddRef() const final
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{
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ReferenceCount.fetch_add(1, std::memory_order_relaxed);
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}
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inline void Release() const final
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{
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if (ReferenceCount.fetch_sub(1, std::memory_order_acq_rel) == 1)
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{
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delete this;
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}
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}
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private:
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FString Name;
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TMap<FString, FCompressedBuffer> Inputs;
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mutable std::atomic<uint32> ReferenceCount{0};
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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FBuildInputInternal::FBuildInputInternal(FBuildInputBuilderInternal&& InputBuilder)
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: Name(MoveTemp(InputBuilder.Name))
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, Inputs(MoveTemp(InputBuilder.Inputs))
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{
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Inputs.KeySort(TLess<>());
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}
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const FCompressedBuffer& FBuildInputInternal::GetInput(FStringView Key) const
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{
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if (const FCompressedBuffer* Buffer = Inputs.FindByHash(GetTypeHash(Key), Key))
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{
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return *Buffer;
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}
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return FCompressedBuffer::Null;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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FBuildInput FBuildInputBuilderInternal::Build()
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{
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return CreateBuildInput(new FBuildInputInternal(MoveTemp(*this)));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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FBuildInput CreateBuildInput(IBuildInputInternal* Input)
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{
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return FBuildInput(Input);
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}
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FBuildInputBuilder CreateBuildInputBuilder(IBuildInputBuilderInternal* InputBuilder)
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{
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return FBuildInputBuilder(InputBuilder);
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}
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FBuildInputBuilder CreateBuildInput(FStringView Name)
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{
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return CreateBuildInputBuilder(new FBuildInputBuilderInternal(Name));
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}
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} // UE::DerivedData::Private
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